2 Channel +12V OPTOCOUPLER BASED PROTECTION Relay Board Module for ALL MICROCONTROLLER, This is a 2-Channel Relay interface board, Be able to control various appliances, and other equipments with large current. It can be controlled directly by any Microcontroller (Arduino , AVRDuino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). Features: 2-Channel Relay interface board Equiped with high-current relay, Rating are as follows: 1) 7A-250v AC, 2) 10A-125V AC, 3) 12A 120V DC, 4) 10A 28V DC, Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) , Has the fixed bolt hole and easy installation, Small board PCB size, OPTOCOUPLER BASED PROTECTION, two ways of relay status indicator LED (red), Module interface specifications (5 wire): 1. External +5V (VCC), 2. GND external GND, 3. IN1-IN2 (Logic inputs to relay), 4. Relay Supply +12V (RS), Package included: 1 x 2 Channel +12V OPTOCOUPLER BASED PROTECTION Relay Board Module for ALL MICROCONTROLLER.